Tiger Airways Australia Pty Ltd, operating as Tiger Airways Australia, is a low cost airline which commenced services in the Australian domestic airline market on 23 November 2007. It is a subsidiary of Tiger Airways Holdings, a Singapore-based company, which is owned partially by Singapore Airlines. The airline is based in Melbourne, Victoria, with its main base at Melbourne Airport. The airline's secondary base, Adelaide Airport, commenced operations on 1 March 2009. A smaller "virtual base" was opened in Sydney on 29 October 2009. Tiger also opened a third operational base at Melbourne's Avalon Airport, in November 2010.